I found a nice tool to help me with FA. It's called JFLAP - a JAVA applet that helps to evaluate FA,Turing machines etc. It's very easy to use and I found it quite helpful in checking whether my FA worked.
managed to download both JLAP and java runtime. I installed java however, running JLAP is the problem as for now. I can find executable file the JLAP folder I downloaded. Could you please help? Found instructions on how to run it on their website but it clear enough.