Skunk #1 (or many variants) is a great choice for a tough newbie indoor plant to grow, but with that strain in particular odor control is an issue (hence the name!).
I would say Northern lights is basically THE "easy indoor" strain to grow, and that's what Newbies should be looking at for a first grow, if they want to start from commercially available seed.
The strain was selected over dozens of generations specifically to be the "ultimate indoor" plant, and in a strongly indica dominant plant it combines short height, ease of growth, short flowering time, abuse and disease resistance (including to mites), and high-potency flowers, with a relatively low odor profile. The line is inbred (meaning every plant grown from a pack should be similar), and also that offspring from a cross of any two plants should be similar to the parents. On top of these benefits, the seeds are also relatively inexpensive too.
In terms of "bagseed", that depends entirely what bag the seed came out of! The biggest problem with "bagseed" is that you typically have no idea what you're going to end up with.
Yes, by legend "diesel" came from a bag sold at a Grateful Dead concert, but the bag in question was probably stuff grown privately within the USA by connoisseurs, not from a random bag of commercial "dirt weed"!
Anyway, if by "bagseed" you specifically mean seeds found in bags of the brown Mexican commercial "schwagg" that appears commonly in the Northeast and elsewhere, those seeds can grow fantastic plants, but I'd say they're still not the best choice for new growers. The reason is that you really don't know what you're going to get. You don't know how long the flowering times are going to be, and at least some of these are likely to be sativa-dominant plants with long flowering times that are also prone to stretching indoors. Plants like that actually may not be so easy for a new indoor grower to handle.