You make a bio according to the rules with the basic E-rank jutsu to start with. (found here
You must be registered for see links
)
You wait for the bio to be approved by a mod.
Once approved you contact a sensei (someone with an orange name) and ask them to train you. If they agree you make a training thread and get taught more jutsu. What jutsu you can learn depends on various things, but mostly your rank.
Your rank is determined by the number of posts you have. The higher your rank the more jutsu you're able to learn.
When you feel good enough with what you've learned you challenge other RP'rs to battles or spars to get actual battle experience and the more you battle the better you will get.
When you get to a certain rank (Jounin rank I think) you can create custom jutsus.
That's the main breakdown of it. There are other aspects and of course alot of rules, but you said you read through those. I suggest re-reading them a couple times to make sure you know what you're doing.
Hope this helps
