No, those are routers, not switches. You can use subinterfactes on a router interface to have layer-3 interfaces into separate networks (VLANs) as a trunk to an external switch:
encapsulation dot1Q 10 ! Tag traffic for VLAN 10
ip address 10.0.10.0 255.255.255.0 ! ...
A private VLAN (or port isolation) restricts communication between switch ports. Normally, that is used to enable their communication to a server or uplink port while denying all other ports. Since a private VLAN is port-based it is essentially a layer-2 concept. Your trust is based on physical switch ports.
An access list can be used to filter ...
Also why they say that we can have one learning domain in a bridge domain versus many learning domains in a bridge domain?
Bridge Domains contain Learning Domains, they are not mutually exclusive.
What does this mean and whats the use case?
First, let's look at a Bridge Domain with a single Learning Domain. This effectively means that you have a single ...
It seams you are need to Configure InterVLAN Routing - I believe it can be done with 3560 you have. Try ip routing command - and if possible go to https://www.cisco.com/c/en/us/support/docs/lan-switching/inter-vlan-routing/41860-howto-L3-intervlanrouting.html to get full instruction