For me, the help (under the topic IF...ENDIF) is quite clear. Let me explain about "expressions". From the VFP help:

IF lExpression [THEN]
  Commands
[ELSE
  Commands]
ENDIF

Arguments

lExpression

Specifies the logical expression that is evaluated. ...

Now, a logical expression can be ANYTHING that evaluates either to .T. or to .F. This can include (not sure if the list is exhaustive):

The constant, .T. or .F.

A variable that contains .T. or .F.

A field that contains .T. or .F.

A function that returns .T. or .F.

The result of a logical operator, such as AND, OR, NOT - this is the case you mentioned

The result of the equality comparison, greater-than, etc.

... or any combination. For instance, you used both equality comparisons, and the keyword AND.

So yes, you can combine different conditions with AND, OR, etc.

>Does VFP7.0 permit multiple conditions for the If/Then & DoCase conditions e.g.,
>if table1.field1 = 1 and table2.field3 = 4 and form1.bwlst1.value=3
> then execute
>endif
>
>OR
>
>do case
> case table1.field1 = 1 and table2.field3 = 4 and form1.bwlst1.value=3
> then execute
> case 2
>endcase
>
>I can't find any discussion of this in the VFP reference or Hentzen's book.

Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)