Learn English – ON the field or IN the field

All of the following are correct and would all communicate essentially the same meaning: The boys need to settle it and will not receive assistance in doing so. (Alternatively, the speaker might intend to communicate If it's going to be settled at all, you'll need to do it yourselves.)

The only exception is that among or amongst would generally not be chosen if only two boys are being addressed.

Not all good or educated writers and language experts agree with the commonly-held idea that between cannot properly be used to indicate relationship between(!) more than two people. See below.

Amongst is more frequently used in British English than in American English, in which among is preferred between the two.

• You, boys, must settle it between yourselves.

• You, boys, must settle it among yourselves.

• You, boys, must settle it amongst yourselves.

• You, boys, must settle it for yourselves.

• You, boys, must settle it by yourselves.

• You, boys, must settle it yourselves. (No preposition is needed.)

Regarding between, among, and amongst, see the usage note at between in The American Heritage Dictionary.

Also see https://english.stackexchange.com/questions/37636/between-vs-among. I particularly recommend @tchrist's thorough treatment of this question in his answer there.

The six options were identified by @snailboat in an ELL chatroom. But all elaboration on them is mine. Thanks, snailboat!

Let's get the easier question out of the way first. When you are confused, you can use about or on, but I think about is the "safer" choice. Behold the ngram.

As for for the taking, let's say that you need a job, and I own a business. I might tell you:

I have a job opening. It's yours for the taking.

or:

I have a job opening. It's there for the taking.

Basically I'm telling you that you could get a job with me, if that option sounds good to you. I could easily substitute "if you want it" for "for the taking".

Looking at the ngram, we see that common ways to use the phrase include

• there for the taking
• free for the taking
• [possessive pronoun] for the taking (i.e., his for the taking, yours for the taking, etc.)

I won't say those are the ONLY way the phrase can be used, but an answer can't delve into every possible usage of a phrase. Those three are a good start.

There's also a relatively high number of

• compensation for the taking

but those come mostly from legal documents; that's not a wording generally heard in everyday conversation.