I want to test one server. How can i ?

Question

Hello,
I must make one form where i will load .txt file. When i load this file i will make http request to one webserver and send querys to make load test.
Can someone help me ot this. I`m beginner on this and i will appreciate any kinde of help.

p.s.
Sorry if i post this in wrong forum.
If need i`ll try to explain better.