I've had one of these for a number of years and it works fine for its size and my applications.
In the next building I've got access to mig/tig/gas etc. but it's setup for bigger jobs.
When I need something small (usually brazed) then using my Bernzomatic is quick and convenient.
A couple of caveats:
1. It is a small torch, intended for small items.
2. The oxygen does not last long (at most 30min) and is rather expensive (about $8/bottle). Bottles are NOT made for refilling.
3. There are no pressure gauges so its a guess if you have enough for a particular job prior to beginning it.
I usually use it for silver brazing or regular brazing - works good.
You could weld small steel parts using small diameter rod but it would be tricky.
It seems to be primarily more of a "high temp" propane torch for small jobs
If you are going to use it to learn to weld I suggest you get a unit with refillable, and much larger bottles, because you'll spend alot of time trying to perfect your skills.
Lottsa gas=lottsa bottles=lottsa $$
hth,
Pres