Here, let's just end the confusion. Or try to
Here are the major scales: First note is the tonic (So if it starts with C, it's C major)
C D E F G A B (no sharps or flats)
G A B C D E F#
D E F# G A B C#
A B C# D E F# G#
E F#G#A B C# D#
B C#D#E F#G#A#
F#G#A#BC#D#E#
Db Eb F Gb Ab Bb C
Ab Bb C Db Eb F G
Eb F G Ab Bb C D
Bb C D E B F G
F G A Bb C D E
Keep in mind, there are "enharmonics," meaning same pitch but different name, but I've left them out for now for the sake of ease of reading. But bear in mind, there is such a thing as C# major, but C# and Db are the same notes (same with F# and Gb, and so on)
But this covers them all, moving in fifths (which is a good way to practice things anyway.
What to notice? Each letter of the musical alphabet appears only once in each major scale (it might be sharp or flat, but the letters are always used just once) So it's a good idea to memorize the order of sharps and flats...
Don't even worry about modes until you have these down cold. See you in 3 months, 2 if you work hard.