You can apply for a Portugal tourist visa from India by following these steps:
Step 1: Choose a visa type based on your purpose of visit
Step 2: Arrange the required documents for the visa
Step 3: Apply online through the official VFS Global website or visit the nearest Portuguese embassy
Step 4: Fill out the application form and submit it
Step 5: Pay the visa fee and attend the visa interview if required
Step 6: Wait for the visa decision