Beginner's problem with P2Pfilesharing

[zebrafink]

Hello,

trying to keep it short and to use not too bad English:

Using BitTorrent I've managed to download at least one video file correctly.
I.e. I have got the video and can watch it.

With the other "downloads" I have had only problems.

Several files cannot be opened unless I get a special Software for it, which must be bought.

Others tell me something like: this file cannot be opened.

Others ask me if I want to download "trackers". (?)

An one VERY BIG file which took me many hours to download consist of several seperate files, some of which cannot be opened, others of which contain something completely different from what they should contain by their names. (For example, the name is a certain XXX-Video, but the contents is just audio music)

What are your experience with P2P filesharing, and what can I do to avoid mistakes and to get video files that can be opended and watched?

Thanks in advance for helpful answers!

Regards
I (doing all this stuff for my husband)

[Jacques]

If it is copyright material, sorry you are on your own.

[Floydoid]

P2P sharing of copyrighted material is illegal. Don't do it - it deprives the authors/producers of their rightful royalties.

[zebrafink]

What makes you think that I try to fileshare copyrighted material?
I know that I must not!
But from the little I have understood about filesharing it is not per se illegal.

If anyone has suggestions concerning my technical problems, it would be really nice.

Kind regards
I.

[Floydoid]

Well as you've implied, you've picked up all sorts of stuff that isn't what it purports to be. I only hope your PC security is bullet proof because you could pick up all manner of nasties if you're not careful.

[zebrafink]

having checked each site by Mc Afee, I trust not to have caught a bullet
thanks for good advice
though it doesn't solve my problem.
Kind regards
I.

[Lizard]

VLC media player, will play almost anything. legal or illegal, it doesn't discriminate.

[the man, the legend]

What type of files are they? i.e. DivX, Avi, Mp4 etc...