Hey there, I'm Cynder! It's nice to meet you.

First off, congratulations on finding the Guild and registering. Welcome! Secondly, there's a handful of tips that I can give you, it depends on what exactly you want them on. For now, I'll just offer some very basic and general ones. Apologies if they're a bit vague, self-explanatory or just obvious! But, here you go:

Tips -
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[*]Read the rules. Most of it is self-explanatory, so you can really just skim. It's mostly to just play nice, don't spam and keep adult content in PMs.
[*]Also, read the rules of any Roleplay that you're in. GMs vary and so do their rules when playing!
[*]Try to find a section depending on how you are writing or want to write! Free is one-liners, Casual is a few paragraphs and Advanced is many. Sections such as Arena, Nation, Tabletop and 1x1 are a mixed bag for levels of writing since they're mostly interest based.
[*]Roleplays can be a commitment, so I'd recommend only joining ones that you're very interested in. 
[*]Don't be afraid to GM your own story - most people assume they're going to be bad at it and it usually isn't the case.
[*]Try not to join too many Roleplays at once or else you'll overwhelm yourself rather quickly. It's not very fun.
[*]Enjoy yourself! Roleplaying is a hobby and not a job. If it feels stressful, then take a break.
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Feel free to ask if you have any questions or want anymore tips, I'm always glad to help. Once again, welcome to the site and I hope you find what you're looking for and enjoy the time you spend here!