A) do i need a license to use liquid fertilizer? B) how much is a solution of fertilizer (weed and feed) a gallon? C) what is the best size tank to buy? D) is a hose or a walk behind aplication best? E) what kind of mark up do you put on the fetilizer? F) how much does a gallon of fertilizer weight? G) what kind of saftey protection should i have? H) can it be wet or dry? I) can it be windy or does it matter? J) how many times a season should it be done? K) how does a person not burn the grass? L) how much solution per square feet should i use? M) what fertilizer is better dry or wet? N) where do you purchase said fertilizer? O) what should i look to spend per gallon or pound? P) do you have to buy a certain amount such as gallons or pounds? Q) what times of the season should it be done? R) are there harmful effects from the chemical on me? S) how long before people can go back on the grass after spraying? T) is spraying for bugs a entirely different set of rules or laws? U) what kind of investment is a small sraying outfit cost? V) Do you lawnstudent spray? W) do you charge buy the square foot or do you charge buy how much liquid you use? X)since im all out of questions for now im going to quit. Y) Z) not to be cocky but if any if not all of the questions you can answer or have an opion on i would much apresheate a response.