Getting started saving seed

[tam91]

I had been planning to try starting from seed this year (husband has been told I want shelves and shop lights for Christmas), and then try saving some seed next year.

With my current tomatoes, I am a little leery of saving seed this year, as I have plants from nurseries who won't say where the seeds came from. While I think Black Cherry, Black Krim, Cherokee Purple, and Red Brandywine are who they are supposed to be, I thought I'd wait until next year when I know where the seed came from. Although I love the Black Cherry, guess it must be an OP.

Pineapple is from Burpee, so I guess I could try him.

Nyagous I got from some nice non-commercial lady, no clue as to the seed source. And I seem to have two slightly different plants - one makes slightly larger and different shaped tomatoes than the other, who is smaller and elongated - and one has some sort of crud. So again, I was thinking I should start with some purchased/reliable seed for next year.

Oh, and Red Pear is consistant - that is an OP right? Or can there be different ones (again from the lady who won't say grr).

Also, do most of the people who save seed here bag blossoms? Or is it not usually a problem? Especially if I was to eventually trade some seed, I would feel terrible if things were crossed.

So should I try bagging some blossoms (if it isn't too late) with any of: Pineapple, Black Cherry, Red Pear, maybe Black Krim? Or not worry about bagging? Or just purchase seeds, and try next year?