Some of these are not the most up to date, which will put you at a disadvantage. Opinion/observations below:
* Freespire - OK but a relatively small 'player' in the scheme of things (no disrespect).
* Debian - A sold distribution but not known for being user friendly.
* Gentoo - I like because its small and quick but not what you're looking for. Good for older machines.
** Mandriva - really is a cracking distro. (I had been using various versions for years) Good online support, through the website. It's still running on my desktop PC, though I barely use the machine. Generally, user friendly menus.
* Knoppix - the people who started the Live CD revolution. More of a specialist distro.
* Zenwalk - I've 'fired up' this one but don't remember anything about it, sorry.
* OpenSuse - a favourite in corporate circles and I find it 'pleasant' to use. The menu system, in particular is good and is similar to my current favourite, Mint. A 'serious' distribution but IMO not quite for a newbie.
** Fedora - I also rate this as good/v. good.
* Foresight - if I recall, this is a specialist distro., mainly for disk/data analysis, or I totally 'off base'
🙂
Not tried this one.
** Ubuntu - the current most popular distro. (with good reason). Likely to provide (nearly) everything you need, if it runs on your machine. Plenty of online information.
My current favourite, Mint - Ubuntu, with the menu structure similar to OpenSuse and easier to download software/updates.
Hope that helps.
Distrowatch is my main source of updates.

Just skimming the surface
Opinions/guidance expressed are intended to benefit the reader (mostly) but no responsibility should be assumed for the accuracy and no warranty is implied/expressed or given - so eBay may pull this post
Demised responsibility