It is better not to post as soon as anyone comes to the forum. Everyone starts posting as soon as they come to the forum without following the rules. If you use serch batton,do not answer to you can use Google. If you think you can't understand the answer from Google, you can ask it in the forum. Post your question in that thread and you will get the appropriate answer.Newcomers will then be able to post with their quality,
An introduction by a newbie to the community is highly acceptable. It is always a good way to inform the community your intention for being on the forum. Most newbies shy away with the introduction part or are busy with bounty from the beginning. The best board for introducing yourself is this one.