Newbie basic forum use guide needed please

Just ordered a new 5 door se l green tec due next week, have some what are probably numptie questions so bear with me: how do I see only new posts?, is there a way to detail more sub groups eg technical, non technical, items for sale/wanted?   Also I’ll be buying a spare space saver wheel - I’ve reviewed the on line owners manual and can’t see it specifying different wheel bolts when using a steel space saver, do I just use the alloy wheel bolts? Will be buying the central armrest I think and maybe the auto light switch . Quite looking forward to this car..