Holy_Shit_Man Hi Vinh. First thing you should see are rules. Then, since it's still site about SLRR - the noob guide. And about the forum itself, it's split in categories and subcategories. I think all them are self-explanatory. The ones you should know are: Car/part search, I've got a question..., Show off your rides and Fixes and other help. There's also big roleplay subcategory, and if you want to start your RP thread, everything's here.
Bigg_Boss93 Hi and welcome to our forums! KeeJay basically told you all what you needed to know so i wish you to enjoy your staying. 🙂