questions

[just peachy]

what is the difference between a post and a thread? how do I put in smiles and pictures above such as rainbow warnings etc I looked at the standard guidelines few times tried and still dont understand it ..any one who knows how to do it please help w to do it love to learn it makes posts much cuter and funnier ... what does it mean post icon and no icon..which way is suppose to stay on thanks to anyone who can help ..