I use the RCBS digital scale, I prefer it over the 5-0-5 beam scale. I do own a 5-0-5 beam scale that I would use as a back up if my digital scale ever failed me. You will want to buy a set of scale weights to double check any scale you buy. I check mine everytime before I start reloading.
www.midwayusa.com is a good place to find a reloading manual. I own a few reloading manuals, I do not like the Speer manual but I do like Nosler & Hornady manuals.