Answer

In Jain Dharma, tapas is generally of 2 main types:

1. Bāhya Tapa — external austerities
2. Abhyantara Tapa — internal austerities

Explanation

Bāhya Tapa (External Austerities):

• Anashan — fasting
• Unodari — eating less than full hunger
• Vritti-sanksep — limiting food and desires
• Rasa-tyag — giving up tasty foods
• Kaya-klesha — bearing bodily hardship
• Samlinata — withdrawing the senses and living simply

Abhyantara Tapa (Internal Austerities):

• Prayaschitta — repentance
• Vinaya — humility and reverence
• Vaiyavachcha — सेवा / service
• Swadhyaya — scriptural study
• Dhyana — meditation
• Kayotsarga — standing/sitting in renunciation of the body

If by vidhi you mean the proper method of doing tapas, then the main points are:

• Do it with pure intention
• Follow it with discipline and modesty
• Avoid pride or display
• Keep guru’s guidance if required
• Combine it with samayik, repentance, and self-control

Spiritual Understanding

Tapas in Jainism is not just physical hardship. Its real purpose is:

• to reduce karma,
• to purify the soul,
• to increase self-control,
• and to move toward liberation.

Takeaway

So, in short:

• Tapas = Bāhya and Abhyantara
• Vidhi = doing it with purity, discipline, humility, and सही भावना

If you want, I can also give the Gujarati/Hindi names of all 12 tapas in a neat list.