The ESP32 chip has dual core processors, with a built-in Wi-Fi and bluetooth (both legacy and Low-Energy). It runs 32 bit programs and has a 512 kB RAM.
It also has wide variety of peripherals available: capacitive touch, ADCs, DACs, UART, SPI, I2C and much more. it comes with built-in hall effect sensor and built-in temperature sensor .
 
Single or Dual-Core 32-bit LX6 Microprocessor with clock frequency up to 240 MHz.
520 KB of SRAM, 448 KB of ROM and 16 KB of RTC SRAM.
Supports 802.11 b/g/n Wi-Fi connectivity with speeds up to 150 Mbps.
Support for both Classic Bluetooth v4.2 and BLE specifications.
34 Programmable GPIOs.
Up to 18 channels of 12-bit SAR ADC and 2 channels of 8-bit DAC
Serial Connectivity include 4 x SPI, 2 x I2C, 2 x I2S, 3 x UART.
Ethernet MAC for physical LAN Communication (requires external PHY).
1 Host controller for SD/SDIO/MMC and 1 Slave controller for SDIO/SPI.
Motor PWM and up to 16-channels of LED PWM.
Secure Boot and Flash Encryption.
Cryptographic Hardware Acceleration for AES, Hash (SHA-2), RSA, ECC and RNG.
 
Different Ways to Program :
ESP32  can be programmed  in more than one way. And not surprisingly, the ESP32 supports multiple programming environments.
Some of the commonly used programming environments are:
Arduino IDE
PlatformIO IDE (VS Code)
LUA
MicroPython
Espressif IDF (IoT Development Framework)
JavaScript
As Arduino IDE is already a familiar environment, it is widely used in projects. 
 
paste this link 
https://dl.espressif.com/dl/package_esp32_index.json
 on the Additional Board Manager URLs under File -> Preferences of Arduino IDE.