1. INTRODUCTION

2. THE GALAXY SAMPLE: TYPICAL STAR-FORMING GALAXIES AT $Z\sim2$
2.1. Target Selection
2.2. Location on the $M_{\star}$ -SFR Plane

3. WFC3/IR IMAGING DATA: OBSERVATIONS AND REDUCTION
3.1. New WFC3/IR Observations
3.2. Archival HST Data
3.3. WFC3/IR Data Reduction
3.4. PSF Investigation
3.5. Noise Properties and Limiting Depths

4. VLT SINFONI/AO IFS DATA

5. COMPARISON OF THE STELLAR CONTINUUM PROPERTIES WITH THE Hα KINEMATIC PROPERTIES

6. MODELING THE REST FRAME OPTICAL LIGHT DISTRIBUTIONS
6.1. Choosing the Origin: Kinematic vs. Light vs. Mass Centers
6.2. Modeling Assumptions and Input Values
6.3. Single-component Fits to the J- and H-band Light Distributions
6.4. Bulge-disk Decompositions of the J- and H-band Light Distributions

7. RESULTS: DISKS AND SPHEROIDS IN MAIN-SEQUENCE GALAXIES AT $Z\sim2$
7.2. Results from the Bulge-disk Decompositions

8. COLOR DISTRIBUTIONS WITHIN GALAXIES
8.1. Color Profiles
8.2. Derivation and Analysis of the Color Maps
8.3. Color Gradients and Color Dispersions

9. DISCUSSION: COMPARISONS WITH OTHER $Z=2$ SAMPLES AND WITH THE $Z=0$ GALAXY POPULATION
9.1. The Sérsic index and $B/T$ versus Stellar Mass
9.2. Size versus Stellar Mass Relations
9.3. Information from the Resolved Color Properties

10. SUMMARY