I'm an experienced sprouter and have been doing it for decades with many different beans and seeds.
1) You don't need to special order seeds or legumes. But what ordering from a reputable supplier gets you is guaranteed sprouting, which means that they aren't too old. Take for example mung beans. They will last forever in your cabinet and will still be good for cooking into a soup. But their sproutability degrades over time. So fewer beans will sprout. I buy my mung beans from the Indian grocery around the corner or the health food store bulk bin and I'm pretty pleased with their vitality. Almost as good as Sproutpeople's mung beans.
2) The bacterial scares have primarily been for alfalfa sprouts and clover sprouts. What you do is to buy your seeds from a supplier that acknowledges and stands behind them. Or avoid alfalfa and clover sprouts altogether. Either way it is critical to wash, wash, wash. I wash my sprouts 3 times a day counting to twenty seconds each time. This also prevents fungus from growing amid your sprouts.
Years ago there was a commercial mung bean sprout problem, which turned out to be because they were washing the sprouts in water contaminated by the runoff from a factory farm and the shit-infused water had a variety of food borne microorganisms. This is another reason to grow your own rather than buying sprouts.
I've mentioned Sproutpeople.org. I'm going to recommend that you visit their site. They have instructions for every kind of seed or bean you want to sprout and how to grow microgreens. Plus they have videos.
As others have noted, you don't need special equipment to sprout. That said, over the years I've tried many different special spouters. Here are the ones I swear by:
EasySprout. It is a self-contained unit that is easy to wash and seems to work especially well. If I could own only one sprouter, this is it.
https://sproutpeople.org/sprouting-supplies/easy-sprout-sprouter/For small seeds like alfalfa sprouts or microgreens, they just started selling a stainless steel sprouter with a steel mesh like a tight sieve (but flat). It's been the best thing I've used for tiny seeded sprouts. It allows them to grow up instead of in a tangled mess. The resulting sprouts stay fresher longer in the fridge. I am certain you could find other options that are similar to this. But this is what I bought and use.
https://sproutpeople.org/sprouting-supplies/small-stainless-steel-tray-sprouter/