There are various ways of learning Lojban unique to the individual learning it, but to help you get started here are some suggestions. There are also learning materials available in non-English languages.

Here are the links for learning Lojban.
http://www.lojban.org/tiki/wavelessonscontinued(external link) - is a popular textbook
http://lojban.github.com/cll/(external link) - is the full grammar
https://www.youtube.com/watch?v=yZjSTUK3hFI(external link) - is a good introductory video
http://vlasisku.lojban.org/(external link) - is the dictionary
https://sites.google.com/site/slovlacukt/file-cabinet(external link) - is an alternative offline dictionary
http://www.memrise.com/courses/english/lojban/(external link) - is a great place where you can learn lojban words online. Just register on that website, try several courses and use the one that you like most
http://lojban.org/jboski(external link) - automatic grammar check of what you write in Lojban (which is unique among all languages!) with English glossing (i.e. translation).
http://camxes.lojban.org/(external link) - Even better than the previous item. But without glossing.
https://groups.google.com/forum/#!forum/lojban-beginners(external link) - a community. This is where you can ask any questions.
http://webchat.freenode.net/?channels=ckule%2Cjbosnu%2Cjbopre%2Clojban(external link) is a chat where you can make friends and ask for help for learning lojban (in #ckule section).

Other resources:
http://facebook.com/groups/lojban/(external link) - the group in Facebook
https://plus.google.com/communities/105661163321603750740(external link) - the group in Google Plus.

Get started with a book

To get started, you will need to begin reading one or more of the Lojban Books, such as

These books will teach you about how to read and use Lojban; what the different types of words and grammatical constructs do, how to use them and interpret them; how to express yourself Lojbanically. They will not, however, teach you vocabulary, style, spoken flow, nor other aspects involved in really learning about and using a human language.

IMPORTANT NOTE: Since the publication of most of the books, there has been a change to the semantics of Lojban articles known as xorlo. These changes simplify the grammar in that aspect and are not difficult to grasp. Please keep this reform in mind when consulting the official reference grammar, as it was effectively published before the approval of xorlo.

Get started following a class

As it happens, this fall 2011 semester contains the first Lojban Class at Rice University. Following that page will give you resources associated with the class.
ALSO! Any even partially experienced Lojbanists willing to help / refresh should follow the class and notify Joe Anderson (IRC:djandus) of any issues. There is also a thread with the same title on the mailing list.

Quick reference

A separate page has been set to collect cheat sheets(external link) to be used as quick reference and as an aid for memorization.

Try out new interactive learning tools

New online tools for self-directed learning are constantly being developed. One such tool is the language fluency game "Where are your Keys?"(external link). For Lojban, go to website "lo do ckiku ma zvati"(external link). Another tool is Wave Lessons continued.
A web site dedicated to learning vocabulary called Memrise(external link) has word lists for Lojban gismu and cmavo, ordered by usage frequency. It also features smaller lists for certain groups of cmavo that share similar caracteristics.

Choose a source of vocabulary

The Lojban books and games teach you how to use Lojban, but they don't help you learn the whole vocabulary. For that you will need Word Lists, and flashcard sets from a site such as smart.fm(external link), which is probably the most popular online flashcard site with Lojbanists. Another flashcard site gaining popularity among Lojbanists is Memrise(external link). Other options include Anki(external link) (downloadable; Lojban decks are downloadable within the program), Quizlet(external link) (it's online; register and join the lojban group; downloadable from Quizard on iPod/iPhone and from Kaka Flashcards on Android devices), jMemorize (downloadable) or Logflash(external link) (if you are more technically inclined and like MS-DOS). Also, take a look at the jbovlaste dictionary(external link) and its (unfortunately) English-only user-friendly frontend vlasisku(external link). You will need to have read a little, from one of the learning texts, about Lojban to know what kind of words you need to learn and thus how to effectively search for definitions.

A set of pronunciation guides are available to help you speak Lojban.

Read lojban texts

Try reading a progression of proofread (proofed by at least one lojbanist in addition to the author) lojban texts, starting with short-and-easy through to long-and-difficult. For example, read Terry the Tiger (you can listen to this one too!), then one of the Berenstain Bears books, for example The Berenstain Bears and the Prize Pumpkin, then The Little Prince. For conversational text, try Everyday Lojban, Phrasebook and Simple phrases.

Connect with the community

The two most active points of communication for the Lojban community are the Lojban forums.
Many Lojban students find the Lojban IRC chat room to be very valuable for getting their questions answered quickly when there are others around on the network. One can also try practicing their Lojban with others in a reasonable approximation of conversational speed.
Depending on your preferences, anyone of these will meet your needs. For those unfamiliar with mailing lists, there is a web forum interface(external link) to it, which some prefer.
A good idea is to familiarise yourself with common expressions such as Lojban greetings to get you started in chatting Lojban with other Lojbanists. The Lojban IRC cheat sheet provides some useful fundamental vocabulary.

Not quite a learning material, but the Beginner's Mailing List is an appropriate place for beginner's to ask questions.

Google+ hangouts

There is the group (external link)in Google+ where you can videochat in real-time with other lojbanists. Both classes for beginners and advanced learners are planned. Just check out for the last messages on hangouts (the term that denotes videoconversations in Google+) !

What's next?

Continue memorizing the vocabulary and using Lojban as much as you can! Chatting with the community can help you with this. Writing a personal diary or performing translations, are other possibilities. Lojban means different things to different people; for some it is a linguistic curiousity — a test-bed for language experimentation; for others a way to expand their mind or discipline their thought; the desire for precise expression; a new way to look at languages; a fun way to meet and communicate with friends; entertainment; a challenge; art; software application; the list goes on! What will Lojban mean for you?

Once you know what words you want to learn, you could try additional memorization software to vastly improve your vocabulary. Chatting regularly on the Lojban IRC channel is another way of using your vocabulary in real time. Some start blogs or diaries(external link), others translate music.

la laxma'i spaji spaji, the bilingual Lojban/English blog(external link), can be helpful for learning both how various English idioms may be translated into Lojban, and how to use a wide range of Lojban cmavo (mainly in a narrative tone)

The original document is available at http://tiki.lojban.org/tiki/Learning