You have to use BB Codes to put your signatures. You can also get from the code generator outside bitcointalk forum. If you need guidance on how to just use the search on the top right for any guides and also in google search. About the rules, just follow the links and have a time of reading for yourself regarding it. You can also go to this link to find out more rules and guides about using signature. https://bitcointalk.org/index.php?topic=178608.msg1861412#msg1861412. Sharing this also as another rule. https://bitcointalk.org/index.php?topic=484259.msg5390747#msg5390747