you can get a soil tester at most gardening stores.
here is a linkEverybody's Garden Center: Your Source For Indoor & Outdoor Gardening Year-Round.

i have the Rapitest Electronic Soil Tester for 37.99; it's great. sooo much better than the kits.

as for transplanting...dig a hole, turn the pot up side down in your hand, knock out the soil like your making a sand castle, put plant in hole, cover with dirt, water.