I'm starting my journey to get my ICND1 and I'm in the process of planning on building my own lab.
We got some Cisco equipment at work that are not currently being utilized; I don't know if they have any value for I don't have any idea what they are 

 I'm a total noob when it comes to networking and I'm hoping you guys can help me if I can use these guys for my CCENT lab.
My original plan was to save up and get 2x 2600 series routers and 2 3350 switches from ebay, but it would be awesome if I can use/integrate these guys for my lab too.
If I'm not mistaken I have a router and 2 switches + an ASA.
Cisco ASA 5505
Cisco 3725
Catalyst 3500 series XL
Catalyst 3750-E series
Are these guys okay to use for my lab? Any tips on how to best approach my current situation? Thanks!