M Code help

Hii,

I am new to Power BI, Zero knowlege about M Code in power query editor, my requirement is

I have two tables Table 1 contains two measures (Available Capacity) , (Allocated Capacity) with dimmensions year,month, Customer,Organization

Table 2 Contains two measures (BGSW),(OSHC) with Dimensions year, month, Customer , Organization , Prim Skillset ( Extra Dimension in Table 2

Requirement is i want two measure coloums BGSW and OSHC from Table 2 in to Table 1 . please help me in M code

(i.e) I can do this in DAX but i have to do in power Query editor beacuse after getting coloums in to table 1 i need to transpose the table

Please help me in M code or suggest me any M code learing article so i can solve this problem