L.A. Orange Cty. Toll Roads

Hey, all:

I have to make a quick trip to the Murrietta area in the next few days,
on I-15, south of Lake Elsinore.

Then, I have to jog back to Lake Forest -- sort of near Irvine/Laguna
Hills where the 405 and 5 come together.

I need some help. Things have changed since I used to travel down in
that area.

I am pretty good in the Long Beach, Pasadena, HP areas. And I can find
my way from Burbank Airport to Murrietta, but I was doing one of the
internet map services to find how to get to Lake Forest from Murrietta.

They give some directions that basically say take I-15 to 91 and then
get on something called the SR 241-- The Eastern Transportation
Corridor, which is apparently a toll Road?

I only stay on it for a short distance and then get off it and then get
on some other toll road -- SR 133 -- I stay on SR 41 for 11 miles and
then SR 133 for 3 miles.

I've never driven these things and am a bit leary. I was wondering
about taking Hwy 74, the Ortega highway, which I seem to remember doing
decades ago. This will be a Saturday evening, probably about 7 p.m. or
so....any recommendations, blessings, prayers?