access actually resembles a series of spreadsheets, where each spreadsheet is linked to others by data common to both spreadsheets.
what you are trying to do is split your master spreadsheet into these sub-spreadsheets, as a first step.
In one post you asked about needing a programmer. The thing is that using access well is not like using a spreadsheet. you can do lots with a spreadsheet without ever using a macro. you can't do anything substantial in a database without code and macros. A large proportion of access development is actually DEFENSIVE. It is just so powerful that all users, including the developer, generally need to work in an insulated protected environment that limits them substantially to what they can do.
Access is hard enough for a non-programmer, and it's extremely hard for a non-programmer to develop anything substantial. It's much more advanced way of handling data compared with excel
It's like locking every excel cell, and then making them available again to a series of dedicated buttons or macros. It's not something any normal excel user is familiar with at all.
in particular you specify that each column of a database is of a particular data type, (say number) and you then cannot put anything other than a number in the cells in that column. No notes, no colours, Just the data. A date column will only accept a valid date. You can't accidentally put the wrong thing in. Finally, you can't refer to other rows of a database table as you often do with spreadsheets. Each row is complete as it stands, and you work with groups of rows as a whole.
It's complicated. hope this helps