I am no mechanic but I have always tried to make repairs and diagnosis my bikes little quirks when needed. I also use the search option when I can but I am stumped. Maybe someone can give me a little advice. I hope I haven't damaged my rectifier or coil. My bike would crank over and over but would not start. I hooked up a battery charger and tried again and it cranked  and cranked,and then nothing. I have lights and all turn signals are working but nothing when it comes to the engine turning over. It wont even crank now. What should I check? Could I have burned out the rectifier or the coil by using the charger? Why would I have lights but when i try and start it nothing happens?

First thing to do is get your battery checked... Take it to someplace like Batteries Plus and they will test it...
How old is the battery?...

When they get old,... they will do everything except make spark.. lights will work, engine will crank, but but no start...
Also, check that the cables are snug... including ground strap

Mine's currently doing the same thing...

to see if the plug is getting spark I have an old automotive trick.

pull the plug wire and get a nail or old plug and mount it in the boot.

making sure there is a small gap for the nail (no contact) OR if using the plug  the base is touching the block crank it over.

either way if the ignition system is working and producing a spark you should see a good blue to blue-ish white spark from the nail or plugs gap.

$4.50 for 2 fuses? They're cheaper than that at a gas station... or are you located where gas stations are just gas stations, not miniature Walmarts?

If your coil was fried, you'd know it. They tend to discolor and/or melt a bit when the internals overheat and let go.

Check your fuses, the main has an annoying habit of letting go for no apparent reason on several bikes in the forum's history. I had to put a 30 amp in mine to get home one night, and it still did it. Has off and on since the bike was brand new.

Ahhhh! The old "Middle of Nowhere" trick! I paid something like $60.00 for an electric fuel pump to get a friends Suburban running down in Big Bend, texas. We were on a campin trip, That same pump in Odessa at a parts store was about $12.00...
As it happens. that outfit that sold me that pump wanted their cash registers cleaned & serviced a few years later. AND, it just so happened I was the guy who got to do it. My boss about pooped hiz drawz when he saw the bill I hung on the first register they brought in. I charged them a small fortune,& then they brought in another one,, & I knocked their heads off Again! I explained it to my boss why & he kinda giggled.,.