Uses of can and
could

Use can to talk about
ability-things you´re
able to do.

I can speak 3 languages

She can¨t swim very well

Use can to make offers or
volunteer to do things

I can call the travel agency
tomorrow

I can do a quick search online

Use could to talk about posibillity
in the present

We could take the train

We could go to Machu Picchu

Could means the same as can, in this
context but is less direct.

You could go to your home

You could go by the plane