Disclaimer: I was a six-year ECE senior, who survived the quarter/semester switch and somehow just managed to graduate. I'll give you what I would call the no-bullshit assessment.
Whoever told you it's not that bad is full of crap. The 3000-level courses are where you start to learn things and have to take some initiative. ECE 2000/2100 is a joke by comparison. Here's a quick rundown:
3010 is introduction to EMag. You'll learn wave propagation basics, Smith charts, impedance matching, and Maxwell's equations. This class is painful unless you like Emag...at which point it's slightly less painful.
3020 is intro electronics. You'll really learn about op-amps (beyond that one BS transfer function you learned in 2100), transistor equations, biasing, DC/AC coupling, differential pairs, etc. This class is interesting so long as you don't have Valco. DO NOT take the class with Valco, it will end badly.
3040 is into to power/electric machines. I liked this class, but I was a power specialization so I'm biased (at 120V single phase). You'll learn about single and polyphase AC power, real/reactive/apparent power and power factor, 3-phase systems and transformer configurations, DC motors/generators (and machine excitation), AC motors/generators (and machine excitation), and maybe a little bit about the grid. If you enjoy this class, I would recommend taking the 3047 machines lab the following semester. You get to play with big AC/DC motor-generator sets and 3-phase.
3050 is signals and systems. Remember all that complex math/transfer function/Laplace stuff you kinda learned in 2100 and promptly forgot? It all comes back here. A lot of the stuff I learned in this course didn't make sense until I took 3551 (feedback control systems).
Your mileage may vary...but good luck.