LED lights, SWITCHES and between :)

First of all, thank you for the time end the knowledge sharing.

some points:

1. LED1 : in STD_LOGIC; --i defined it as buffer only cause the compilation log told me too.. would love to read\know how and why

2 .led1_i & led1_r stands for imaginary and real i assume. if ill have another daleyd process, should i also used _i and _r to future variables in ordere to wait for count?

3. I dont have the board with me at the moment to test the code, where can i read about simulating this in quartus?

4. I think that i order the grid1 and grid2 to stay longer ill have to :

elsif cnt >= 50000000-5 then     -- 5s later?
        cnt <= (others => '0');      -- counts 5 clock cycle and reseting the counter and do whatever i need it to do.
        GRID1 <= '1';                   - Am i right?
        GRID2 <= '1';