Canada Visitor Visa steps and processing times

[Venkata Ganji]

Hello
I need to travel to Canada on visitor VISA. Could any one please clarify my queries?
Right now I am in USA on L1 VISA and residing in florida state.
1. What is the process of applying VISITOR visa? online? or walk ins?
2. Are there any near consulates so that I can go by walk in and submit my application?
3. What is the max processing time?

Thanks
Venkat