This is a really generic question that has been asked, discussed and answered many times on these forums before, and we don't need to go through it all again. Please have a read through past threads and the 'sticky' threads at the top to see what has already been said, and then if you have a specific question, do come back and start a new thread for it.
In the meantime, THREAD CLOSED
Any posts I write in Arial are on my mobile phone, so please excuse typos etc. Any posts I write in Verdana are on a PC, so feel free to berate me mercilessly for any mistakes