You need to do some reading over on the Growing Tomatoes forum (linked at the top of this forum's front page) on these questions. There is a great FAQ there on the problems with using those bloom sprays too.

Without knowing the brand name of the fertilizer you used it's impossible to know how often to apply. No label directions?

Most in-the-planting-hole ferts are for early growth only. Most in-ground tomato plants will need at least a couple of supplemental feedings during the season - one at first fruit set and another mid-season. Container plants need it much more often.

There are many different ways to do that and everyone does it differently. There is no one absolutely "exactly which kind" because there are too many variables - weather, variety/type, your soil, in-ground vs. containers, etc.

Dave

The organic tomato fertilizer you bought sounds like an excellent start. Organic ingredients make the best crops. As for how often, a little around the plants between rains is always good. What I like to do with my plants I grow is to add organic fertilizers to water and shake or stir. I have found that it works to add them to water even if the package does not say you can. I add small amounts of a whole bunch of different things to the water for the plants and to the soil around the plants. By doing this I get spectacular results! I have created a webpage to help people learn about little known organic fertilizers that can be added to soil and water to increase plant growth, health and to increase plant yields. If you try it out I think you will be pleased with the results you get. You can check it out at the link listed below.....

Here is a link that might be useful: webpage with information on organic fertilizers to add to tea plant water and soil to get higher yields from your plants