A long shot	something unlikely to happen
Back to the drawing board	start sth again form the very beginning because it's not working as I expected
To corner the market	to control the market
Hands are tied	be unable to do sth because of rules, regulations etc
Un in the air (Our travel plans are still up in the air)	Sth uncertain to happen, a decision has not been made yet
to learn the ropes	to learn the basics of a profession
A learning curve (there was a steep learning curve when I started learning English, but not it's ok)	shows the rates of sb's progress in gaining knowledge
To go down swinging	To fight to very end, not give up easily
by the book	follow the rules doing sth
to cut corners	to do sth quicker or cheaper to save time or money - neagative
between a rock and a hard place	when neither solution is good
from the ground up	to build sth from zero
the bottom line	the final profit
to get down to business	start talking about sth what need to be discussed
to get someone up to speed	to upade sb on the the current situation (wprowadzić)
It's not a rocket science	sth not very complicated
to think outside the box	to think unconventionally, creatively
touch base	contact sb later
in a nutshell	to summarise
back to square one	to start sth from the beginning becuase the previous trail wasn't succesfull
bring to the table (You bring an offer to the table, congrats!)	to provide benefit