No need. Nuff said as per number of replys.
If you are unwilling to explain, then your words are invalid and meaningless.
It is worth checking out, not sure of any free trials but the game itself is pretty cheap to buy, and as it carries no subscription fee, it's not too bad. They do have regular updates - quite often in fact.
They go in order as follows:
1. Guild Wars (now referred to as Prophecies to seperate it from the rest of the Guild Wars titles (all of which also have some reference to the game's focus in their title).
2. Guild Wars Factions.
3. Guild Wars Nightfall.
4. Guild Wars Eye of the North (this is an expansion, and as such you'll need one of the other three games (which function as both standalones and expansions) to bring a character across.
Ideally you'll want to start from Prophecies, as the story does sort of tie in with the rest of them, but there's no real problem with starting from one of the other games.
Definitely worth a play - you'll only find out whether you like it or not by playing - and as it's been out a little while, it shouldn't be too expensive (and even so, from my opinion and experience, it's worth it).