#1
I've been reading from J.J. Fux's "The Study of Counterpoint" and I have the first species down and understood but i'm having trouble understanding the fundamentals of second species. I get that the first half note follows the same rules as 1st species and that the second half note can be a consonance or dissonance (only by filling in two notes that are a third apart) but I guess what I need help understanding is how do I go about choosing the interval of the second half note from the whole note in the Cantus firmus? and how do i lead it into the next bar following the rules of motion?

I know that probably seems hard to understand but I hope someone can help me out X(
<Raven> I got so baked last night
<Raven> that I WOKE UP high o_o
<Raven> Do you have any idea how euphoric that is?
<Raven> I felt like I was being born.
#2
Approach and leave dissonances by step.

Apart from that, do what you please to get to the next measure.
#3
so like the rules about which motion to use dont matter or what?
<Raven> I got so baked last night
<Raven> that I WOKE UP high o_o
<Raven> Do you have any idea how euphoric that is?
<Raven> I felt like I was being born.
#4
Well you still should be avoiding your parallel / hidden 5ths and 8ves (they should be a full measure plus a beat apart, while there are some circumstances that you can get away with fifths: off strong beats as passing tones) but apart from that you can create melodies as you wish. Contrary motion is better, as always.

There are some guidelines / rules about the melodies, though. Don't be combining leaps greater than a third in he same direction, after large leaps it's better to change direction, and so on. Your melodies should be singable and sound good when you do.
#5
right, ok. I think that answers my questions thanks
<Raven> I got so baked last night
<Raven> that I WOKE UP high o_o
<Raven> Do you have any idea how euphoric that is?
<Raven> I felt like I was being born.