I am on the same LAN, so I'm not sure if it is necessary to do port forwarding.
If you only want to access it on the LAN you do not need to do that.
The stuff I've done with port forwarding I couldn't figure out either; I'm not sure whether or not I have to change stuff on the pi or not.
Whatever you've done you should probably undo.
On a LAN, all devices have a private subnet address and they can communicate with each other using them. Unless they are using firewalls, this includes all ports.
So I've only assigned a port VIA the router.
There's no point to that and you should undo it as well.
Now once I go to my laptop and try to go to the browser to go to the webpage and SSH in, neither work.
Unfortunately you have not said how you tried to connect and exactly what happens; "doesn't work" is not informative because the browser must have given some error, e.g. "Connection timed out". As another example, if you are using a hostname (not an IP address) and your browser said it could not find the address or there is a name resolution problem it indicates that hostname is not being resolved by the local DNS services on your LAN.
You can look for devices with an SSH server running with:
nmap -sT -p22 192.168.0.0/24
Presuming that your LAN subnet is within
192.168.0.0/24. Most of them will say "closed".