Hi Niqolus!
I've always found the developer documentation section really helpful. You can find that here: http://community.lithium.com/t5/Developer-Documentation/bd-p/dev-doc-portal?section=communityconcepts
Depending on what you're looking to do, the Community V1 section is fantastic and you can search for methods such as "title" and it will return all methods that involve "title". You can find that here: http://community.lithium.com/t5/Developer-Documentation/bd-p/dev-doc-portal?section=commv1
I haven't had a chance to look around Community V2 yet, but it has a similar idea. You can use both V1 and V2, so here's the landing page for V2: http://community.lithium.com/t5/Developer-Documentation/bd-p/dev-doc-portal?section=commv2
And finally, I've always found it helpful to use a box to test API's in before trying to build them into modules or components just so you know your API is definitely working and it isn't some other part of the code. You'll see an example of the "box" URL on this page about blog titles: http://community.lithium.com/t5/Developer-Documentation/bd-p/dev-doc-portal?section=commv1&leaf-id=Blog.title#Blog.title
Hope this helps!