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My advise is [to] learn up as much and as fast as you can.

What you should do is [to] learn up as much and as fast as you can.

Is 'to' needed in the sentences above?

Thanks in advance!
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New2grammarMy advice is [to] learn up as much and as fast as you can.

What you should do is [to] learn up as much and as fast as you can.

Is 'to' needed in the sentences above?

Thanks in advance!
No - though the second one reads better with it.
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'learn up' isn't a natural construction.
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Comments  
You need these:

My advice is to learn as much ...
What you should do is learn as much ...
or
What you should do is to learn as much ...


I'd say to is needed in the first, optional in the second.

CJ
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